Self-Assembled TiO2 with Increased Photoelectron Production, and Improved Conduction and Transfer: Enhancing Photovoltaic Performance of Dye-Sensitized Solar Cells
作者： Saquib Ahmed , Aurelien Du Pasquier , Dunbar P. Birnie , Tewodros Asefa
DOI: 10.1021/AM2005042
关键词: Materials science 、 Hybrid solar cell 、 Dye-sensitized solar cell 、 Chemical engineering 、 Absorption spectroscopy 、 Porosimetry 、 Nanotechnology 、 Mesoporous material 、 Field emission microscopy 、 Anatase 、 Specific surface area
摘要: Highly crystalline mesoporous anatase TiO2 is prepared through supramolecular self-assembly and by utilizing cetyltrimethylammonium bromide (CTAB) as templating material. Photoanodes of dye-sensitized solar cells (DSSCs) made from these nanoparticles are found to have a high specific surface area 153 m2/g roughness. Optical absorption spectroscopy studies reveal that the photoanode films adsorb four times more dye than commercial P25 TiO2. Mercury porosimetry field emission scanning electron microscope (FESEM) show hierarchical macro- meso-porosity leading better electrolyte percolation, combined with improved conduction pathways compared films. Electrochemical impedance confirm lower higher lifetime in synthesized Higher photovoltaic efficiency was recorded comparison ...
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